CN103922536B - New method for comprehensive treatment of black and odorous river - Google Patents
New method for comprehensive treatment of black and odorous river Download PDFInfo
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- CN103922536B CN103922536B CN201410134633.1A CN201410134633A CN103922536B CN 103922536 B CN103922536 B CN 103922536B CN 201410134633 A CN201410134633 A CN 201410134633A CN 103922536 B CN103922536 B CN 103922536B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
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- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
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Abstract
The invention discloses a new method for comprehensive treatment of a black and odorous river. The new method comprises the following steps of: firstly carrying out early-stage pretreatment on a pollution source of the river by adopting a compound pretreatment mode of a similar-oxidation pond and plant purification; then adding an environment-friendly coagulating agent into the black and odorous river for coagulating, precipitating and solidifying harmful substances in the river; finally planting aquatic plants in the black and odorous river, then breeding a certain quantity of aquatic animals into the river and thus establishing an ecological system. The new method disclosed by the invention has the effects and advantages that the adaptability to the change of water quality is strong, simultaneously the effects of treating sewage and sludge and removing pollutants are good, the cost is low, the efficiency is high, the treatment period is short, the late-stage maintenance is simple, the late-stage maintenance cost is low, the water body is strong continuous self-cleaning capability, and no secondary pollution is caused. On the basis of pollutant interception, and compared with the existing process, the new method disclosed by the invention has strong durability. The transparency is more than 50cm, the oxygen dissolved in the water body is more than 2mg/l, and the effect is fast and can be achieved by about one month.
Description
Technical field
The present invention relates to a kind of comprehensive processing method of sewage, particularly relate to a kind of administering method of black and odorous river.
Background technology
In recent years, the fast development of China's economy and the progressively raising of living standards of the people, incident is China's stream pollution extreme degradation.Oxygen-consuming organic pollutant and nitrogen and phosphorus salts contg remain high, and cause river seasonality or occur black smelly phenomenon throughout the year.River is black smellyly mainly excessively to be received dirt and causes oxygen supply of water body and the unbalance result of oxygen consumption, and water body pollutent under anoxic and even anaerobic condition can transform and produce the repugnant substances such as ammonia nitrogen, hydrogen sulfide, VFA and the atrament such as iron, manganese sulfide.River occurs black smelly, has become the pollution problem that the many big or middle cities of China exist jointly, has had a strong impact on resident living, city image and ecotope.
The domestic and international technology for administering black smelly river mainly can be divided into physics, chemistry and biological three class methods at present.Physical method mainly comprises filtration, precipitation, artificial aeration etc.; Chemical process mainly comprises enhanced flocculation, chemical oxidation and chemical precipitation etc.; Biological method mainly comprises microorganism enhanced technology, technology of biological membrane, plant purification technology and biological-ecological purification techniques etc.
Physical method has the advantages such as simple to operate, instant effect, generally helps out in black smelly river is administered.It is current popular approach that water is changed in desilting, but this method belongs to pollutent illegally shifts, and cures the symptoms, not the disease simultaneously.Chemical process cost is higher, can bring secondary pollution simultaneously.Biological method fundamentally can recover the ecological functions in black smelly river, it is the very fast a kind of technology of domestic and international development in recent years, its utilizes the Metabolic activity of microorganism of the plant cultivated or cultivation, inoculation, pollutent in water is shifted, transforms and degraded, improve water quality, build the aquatic ecosystem with complete nutrition level structure simultaneously, fundamentally recover the health of water body system.Biological method is applied to the improvement in black smelly river, have stable effectively, secure persistent, construction costs are lower, running cost is cheap, can improve with greening environment and view features such as combining, but biological method process takes effect slowly, and be subject to the impact of season and weather condition, if stream pollution is simultaneously serious, biology in river is difficult to survival, and treatment effect is also poor.
Summary of the invention
The invention provides a kind of novel method of black smelly comprehensive administration of river, to reaching while improving treatment effect to greatest extent, reducing its processing cost and the secondary pollution to environment.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of black smelly river ecological treatment method, described method comprises the steps:
(1), compound pre-treatment: the compound pretreatment mode black smelly river source of pollution being adopted to class oxidation pond and plant purification, pre-treatment in early stage is carried out to the source of pollution in river;
(2), cohesion, precipitation, solidification: add environmental protection flocculation agent to black smelly korneforos, dosage is 5 ~ 8% of mud dry weight, stirs, quiet heavy 2 ~ 7d;
(3), the ecosystem is set up: (a) is in black smelly korneforos planting aquatic plants; B () puts the hydrocoles of some amount in a suitable place to breed after the planting aquatic plants of black smelly korneforos in river.
Beneficial effect: compared with prior art, the invention has the advantages that: the ability adapting to change of water quality is strong, administer sewage, mud simultaneously, pollutant removal is good, cost is low, and efficiency is high, treatment cycle is short, and later maintenance is simple and expense is low, water body has lasting self-purification capacity strong, non-secondary pollution.Cutting on dirty basis, there is very strong persistence compared with the prior art.Water quality after process can reach corresponding surface water quality standard.Transparency is more than 50cm, and Dissolved Oxygen in Water reaches more than 2mg/L, takes effect very fast, within about one month, can take effect.
Embodiment
Below in conjunction with embodiment, the invention will be further elaborated.It should be pointed out that for the person of ordinary skill of the art, under the premise without departing from the principles of the invention, can also make some modification and improvement, these also should be considered as belonging to protection scope of the present invention.
A kind of black smelly river of the present invention ecological treatment method, comprises the steps:
(1) compound pre-treatment: the compound pretreatment mode black smelly river source of pollution being adopted to class oxidation pond and plant purification, carries out pre-treatment in early stage to the source of pollution in river;
(2) condense, precipitate, solidify: add flocculation agent to black smelly korneforos, dosage is 5 ~ 8% of mud dry weight, stirs, quiet heavy 2 ~ 7d;
(3) ecosystem is set up:
A. planting aquatic plants: in the black smelly korneforos planting aquatic plants after step (2) process;
B. hydrocoles is put in a suitable place to breed: the hydrocoles putting some amount after the planting aquatic plants of black smelly korneforos again in river in a suitable place to breed.
Concrete administering method is elaborated by the following examples.
Embodiment 1: a kind of black smelly river ecological treatment method, its technical process comprises the following steps:
1, compound pre-treatment
For black smelly river source of pollution, adopt the compound pretreatment mode of class oxidation pond+plant purification, pre-treatment in early stage is carried out to the source of pollution in river.In water inlet arranged transversely 3 road, end, sandstone filters slope, wherein sand grains footpath 1 ~ 2mm, and stone particle diameter 5 ~ 30mm, slope is stacked sand, medicine mixing cartridge bag, and its Chinese medicine is No. 1 environment-friendly type flocculation agent, sand: the weight ratio=2:1 of medicine.Wherein the composition of No. 1 environment-friendly type flocculation agent is polymerize aluminum chloride, flyash and lime, polymerize aluminum chloride: flyash: the weight ratio=1:2:1 of lime.
By sand, stone, mixing cartridge bag precipitation, the pollution substance retained in sewage, make to form class oxidation pond effect fast between filtration slope, recover sludge activity, thus effectively reduce the pollution level of water body.Meanwhile, recycling artificial floating island the Sewage outlet of river alongshore is enclosed come, and in artificial floating island planting aquatic plants, wherein waterplant is Herba Eichhorniae, duckweed etc., carries out purifying treatment by waterplant to sewage.Strike Herba Eichhorniae planting proportion is 1/3rd of coverage of water; When adopting duckweed, the planting proportion of duckweed is about 40% of the water surface.
2, cohesion, precipitation, solidification, bed mud activate
Add No. 2 environment-friendly type flocculation agent to black smelly korneforos, wherein the composition of No. 2 environment-friendly type flocculation agent is polymerize aluminum chloride, flyash, lime and silicate cement, polymerize aluminum chloride: flyash: lime: silicate cement weight ratio=1:2:1:1.The dosage of No. 2 environment-friendly type flocculation agent is 5% of mud dry weight.Then flocculation agent is stirred in river, stir 5 ~ 10min, 30 minutes mud reaction times; Quiet heavy 5d.By the effect such as absorption, cohesion, sedimentation, chelating, solidification, ion-exchange of environment-friendly type flocculation agent, by the rapid sedimentation of pollutent of black smelly korneforos, and river bed can be solidificated in; Water transparency improves, and waterplant photosynthesis strengthens can increase Dissolved Oxygen in Water concentration, and water body is no longer in anaerobism, anoxic condition, and the probability of black smelly generation reduces.Environmental protection flocculation agent can make the redox potential of bed mud in river return to more than 600mv gradually, and water ecology condition is achieved, and recovers microbic activity in water body gradually.If desired, add purification of water quality high efficiency composition microbial inoculum (purchased from Yixing City Tong Sheng Chemicals company limited), need before using first by bacterial classification tap water activation 2 ~ 3h, and then evenly spray to black smelly korneforos, to strengthen the clean effect in black smelly river.Purification of water quality high efficiency composition microbial inoculum is containing multiple-microorganisms such as photosynthetic bacterium, genus bacillus, yeast, milk-acid bacteria, actinomycetes, nitrification and denitrification bacteriums, and bacterial count is up to 5 × 10
9~ 20 × 10
9individual/g.The dosage of purification of water quality high efficiency composition microbial inoculum is 3Kg/ mu, specifically should regulate according to water pollution situation.
3, the ecosystem is set up
(1) planting aquatic plants
In black smelly korneforos planting aquatic plants, comprise floating plant, emergent and submerged plant, 1m
3water body planting aquatic plants 300 ~ 500g.The improvement to water quality is realized by nutrient substances such as N, P in biological and tripton matter in waterplant adsorbed water body and absorption, fixing water body and bed mud.Realize disposing the process of water pollutant by cutting off of waterplant.Wherein floating plant comprises Herba Eichhorniae, duckweed; Emergent comprises Canna generalis Bailey, calamus etc.; Submerged plant comprises eel grass, watermifoil, black algae etc.
(2) hydrocoles is put in a suitable place to breed
After the planting aquatic plants of black smelly korneforos, in river, put the hydrocoles of some amount in a suitable place to breed, make the ecological chain circulating system that in river, formation one is stable, breeding density about 1 ~ 2/m of hydrocoles
3.By the follow-up continuing purge effect of hydrocoles, microorganism and waterplant, then continue to remove the residual Recalcitrant chemicals matter in black smelly korneforos, thus maintain the lasting self-purification capacity in river.Part hydrocoles take waterplant as food, brings secondary pollution after waterplant big area can be suppressed to breed death, and large-scale hydrocoles is again food with minitype aquatic animal, so forms suitable food chain.Wherein hydrocoles comprises spiral shell, loach, silver carp, bighead, grass carp etc.
Adopt aforesaid method to carry out improvement after 30 days, the transparency of korneforos is more than 50cm, and Dissolved Oxygen in Water reaches 2mg/L, and COD content is 35mg/L, and phosphorus content is 0.15mg/L, odorless; And former water COD content 105mg/L, phosphorus content is 1.8mg/L.
Embodiment 2: substantially the same manner as Example 1, difference is: when after step 2 process 5d, oxygen in water still≤1mg/L time, adopt solar fountain formula (or swell type), heavy water pore type aerator to black smelly korneforos aeration in the third step simultaneously, improve the concentration of oxygen in water gradually, make dissolved oxygen concentration in river reach more than 3mg/L.
Adopt aforesaid method to carry out improvement after 30 days, the transparency of korneforos is more than 55cm, and Dissolved Oxygen in Water reaches 3mg/L, and COD content is 32mg/L, and phosphorus content is 0.13mg/L; And former water COD content 105mg/L, phosphorus content is 1.8mg/L.
Embodiment 3: substantially the same manner as Example 1, difference is: the dosage of No. 2 environment-friendly type flocculation agent is 8% of mud dry weight.Quiet heavy 2d after stirring.
Adopt aforesaid method to carry out improvement after 25 days, the transparency of korneforos is more than 55cm, and Dissolved Oxygen in Water reaches 2.5mg/l.Water quality after process can reach corresponding surface water quality standard.
Embodiment 4: substantially the same manner as Example 1, difference is: in step (1) compound pre-treatment, and the construction method of class oxidation pond is filter slope at water inlet arranged transversely 2 road, end sandstone, filters slope body stone grain and piles, domatic upper stacking sand, medicine mixing cartridge bag.The ratio of sand, medicine mixing cartridge bag medium sand, medicine is weight ratio 1:1.
In step (2) cohesion, precipitation, solidification, the dosage of No. 2 environment-friendly type flocculation agent is 7% of mud dry weight.Quiet heavy 7d after stirring.As black smelly korneforos COD concentration>=200mg/L or NH
3during-N concentration>=10mg/L, need add purification of water quality high efficiency composition microbial inoculum, dosage is 2Kg/ mu.
Embodiment 5: substantially the same manner as Example 1, difference is: as black smelly korneforos COD concentration>=200mg/L or NH
3during-N concentration>=10mg/L, need add purification of water quality high efficiency composition microbial inoculum, dosage is 5Kg/ mu.
Claims (9)
1. a black smelly river ecological treatment method, is characterized in that: described method comprises the steps:
(1) compound pre-treatment: the compound pretreatment mode black smelly river source of pollution being adopted to class oxidation pond and plant purification, carries out pre-treatment in early stage to the source of pollution in river; The construction method of class oxidation pond is filter slope at water inlet arranged transversely at least 2 road, end sandstone, filters slope body stone grain and piles, domatic upper stacking sand, medicine mixing cartridge bag; Its Chinese medicine is No. 1 environment-friendly type flocculation agent, and the composition of No. 1 environment-friendly type flocculation agent is polymerize aluminum chloride, flyash and lime, polymerize aluminum chloride: flyash: the weight ratio=1:2:1 of lime;
(2) condense, precipitate, solidify: add flocculation agent to black smelly korneforos, dosage is 5 ~ 8% of mud dry weight, stirs, quiet heavy 2 ~ 7d;
(3) ecosystem is set up:
A. planting aquatic plants: in the black smelly korneforos planting aquatic plants after step (2) process;
B. hydrocoles is put in a suitable place to breed: the hydrocoles putting some amount after the planting aquatic plants of black smelly korneforos again in river in a suitable place to breed.
2. one according to claim 1 black smelly river ecological treatment method, is characterized in that, in described sand, medicine mixing cartridge bag, the ratio of sand, medicine is weight ratio 1 ~ 2:1.
3. one according to claim 1 black smelly river ecological treatment method, is characterized in that, described flocculation agent is environment-friendly type flocculation agent.
4. one according to claim 1 black smelly river ecological treatment method, is characterized in that, in described step (1), the mode of plant purification is utilize artificial floating island to be enclosed by the Sewage outlet of river alongshore, planting aquatic plants in artificial floating island.
5. one according to claim 1 black smelly river ecological treatment method, is characterized in that, in described step (2), as black smelly korneforos COD concentration>=200mg/L or NH
3during-N concentration>=10mg/L, need add purification of water quality high efficiency composition microbial inoculum, dosage is 2 ~ 5Kg/ mu.
6. one according to claim 5 black smelly river ecological treatment method, it is characterized in that, described purification of water quality high efficiency composition microbial inoculum comprises the multiple-microorganisms such as photosynthetic bacterium, genus bacillus, yeast, milk-acid bacteria, nitrification and denitrification bacterium, need before using first bacterial classification tap water to be activated 2-3h, and then evenly spray to black smelly korneforos.
7. one according to claim 1 black smelly river ecological treatment method, is characterized in that, in described step (3), and 1m
3water body planting aquatic plants 300 ~ 500g.
8. one according to claim 1 black smelly river ecological treatment method, is characterized in that, breeding density about 1 ~ 2/m of the hydrocoles in described step (3)
3.
9. one according to claim 1 black smelly river ecological treatment method, is characterized in that, when through step (2) process 3 ~ 5d after, oxygen in water still≤1mg/L time, adopt aerator assist aeration to black smelly korneforos.
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| CN106865639A (en) * | 2017-01-11 | 2017-06-20 | 杭州银江环保科技有限公司 | A kind of water body and in-situ sediment remediation agent and restorative procedure |
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| CN109052654A (en) * | 2018-04-13 | 2018-12-21 | 北京天诚众合科技发展有限公司 | A method of for improving the smelly water of urban black |
| CN108821442B (en) * | 2018-06-29 | 2021-09-07 | 佛山市新泰隆环保设备制造有限公司 | Comprehensive treatment method for black and odorous broken-end surge |
| CN110272169A (en) * | 2019-07-24 | 2019-09-24 | 辽东学院 | A kind of microorganism water purification method |
| CN110776215B (en) * | 2019-12-02 | 2022-07-01 | 天津科技大学 | Novel method for treating black and odorous water body by side filtration assisted and enhanced microorganism in-situ remediation |
| CN111423053A (en) * | 2020-03-15 | 2020-07-17 | 河海大学 | In-situ treatment method of river black and odorous water body based on modified plant tannin |
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